Line chart with two lines; the percent of high school seniors who used cocaine within the last 12 months and 30 days, 1984-2006.
For high school seniors, the percent begins at 11.6 in 1984 and increases to 13.1 in 1985. Then the percent falls to a low of 3.1 in 1992. After 1992, it fluctuates with a high of 6.2 as it increases to 5.7 in 2006.
For high school seniors, the percent begins at 5.8 in 1984 and rises to 6.7 in 1985. Then the percent decreases to a low of 1.3 in 1992. Then it fluctuates with a high of 2.6 as it increases to 2.5 in 2006.